8.31.0

• 💄 chore(deps-dev): bump friendsofphp/php-cs-fixer from 3.69.1 to 3.70.0 1859de1 @dependabot-bot
• 🐝 refactor: W3C markup validation (XHTML to HTML) (#2123) 2a70890 @ArnaudLigny

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• Documentation: https://cecil.app/documentation/
• Download: https://cecil.app/download/
• Self Update: php cecil.phar self-update